Uplink (UL) power control apparatus and method in broadband wireless communication system
First Claim
Patent Images
1. A Mobile Station (MS) in a wireless communication system, comprising:
- a power controller for calculating a power compensation value using a final transmit power in a previous closed loop power control when a power control mode is changed from a closed loop power control to an open loop power control, and determining a transmit power according to the open loop power control using the power compensation value; and
a transmitter for adjusting and transmitting the transmit power of an uplink (UL) signal under control of the power controller.
1 Assignment
0 Petitions
Accused Products
Abstract
An uplink (UL) power control apparatus and method in a broadband wireless communication system are provided. The Mobile Station (MS) includes a power controller for calculating a power compensation value using a last transmit power in a previous closed loop power control when a power control mode is changed to an open loop power control, and determining a transmit power according to the open loop power control using the power compensation value; and a transmitter for adjusting and transmitting the transmit power of a UL signal under control of the power controller.
48 Citations
22 Claims
-
1. A Mobile Station (MS) in a wireless communication system, comprising:
-
a power controller for calculating a power compensation value using a final transmit power in a previous closed loop power control when a power control mode is changed from a closed loop power control to an open loop power control, and determining a transmit power according to the open loop power control using the power compensation value; and a transmitter for adjusting and transmitting the transmit power of an uplink (UL) signal under control of the power controller. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An uplink (UL) power control method in a wireless communication system, the method comprising:
-
calculating a power compensation value using a final transmit power in a previous closed loop power control when a power control mode is changed from a closed loop power control to an open loop power control; and determining a transmit power according to the open loop power control using the power compensation value. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. An uplink (UL) power control method in a wireless communication system, comprising:
-
acquiring, when a power control mode is changed from a closed loop power control to an open loop power control, a final transmit power value PTX,CL — last in a closed loop power control mode, a path loss value LOL— init estimated at a Mobile Station (MS), a latest Noise and Interference (NI) value NIOL— init received from a Base Station (BS), a required CINR value C/NCL— last for a last Modulation and Coding Scheme (MCS) level in the closed loop power control mode, and a number of repetitions RCL— last according to the last MCS level; andcalculating a power compensation value Offset_SSperSS controlled by the MS using the acquired values based on - View Dependent Claims (16, 17, 18, 19, 20)
-
-
21. A power control apparatus in a wireless communication system, the method comprising:
-
means for calculating a power compensation value using a final transmit power in a previous closed loop power control when a power control mode is changed from a closed loop power control to an open loop power control; and means for determining a transmit power according to the open loop power control using the power compensation value.
-
-
22. A power control apparatus in a wireless communication system, comprising:
-
means for acquiring, when a power control mode is changed from a closed loop power control to an open loop power control, a final transmit power value PTX,CL — last in a closed loop power control mode, a path loss value LOL— init estimated at a Mobile Station (MS), a latest Noise and Interference (NI) value NIOL— init received from a Base Station (BS), a required CINR value C/NCL— last for a last Modulation and Coding Scheme (MCS) level in the closed loop power control mode, and a number of repetitions RCL— last according to the last MCS level; andmeans for calculating a power compensation value Offset_SSperSS controlled by the MS using the acquired values based on
-
Specification